Serapeum

The Serapeum was a structure dedicated to the sacred bull Apis in the city of Alexandria, Egypt. It was torn down by Christian mobs in 391 AD.

History
In an effort to destroy pagan influences in Alexandria, the Bishop of Alexandria stripped the treasures from the pagan temples and displayed them in his churches. In the troubles that followed the pagans barricaded themselves inside the Serapeum, a most impressive temple dedicated to the sacred bull Apis. They were given safe passage but promises to leave the temple alone were conveniently ignored when a Christian mob was allowed to tear the structure down stone by stone.